. >>> a flash fire broke out inside u.s. state department today, injuring four people, one critically. officials say the fire started in the ductwork. workers were able to put out the fire before firefighters arrived. there were few federal employees the building because of the holiday weekend. >> right now building inspectors in massachusetts are trying to dherm extent of the damage caused by an explosion. the blast destroyed a strip club friday in springfield and 41 other buildings. it injured 18 people, including some first responders. the blast was an our after gas company workers were called in to investigate a gas leak. you can see the remains of the site today. people say they were terrified when it happened. >> the end of the world. i just seen everybody running with their kids, and the glass shattered. very scary. >> we were thrown into the yard. we were trying to run away. the floor came up. just like a little tidal wave. >> the entire entertainment district is closed off while inspectors demeanor how safe the buil